<script lang="jsx">
import { defineComponent, onMounted, ref } from "vue";

export default defineComponent({
  name: "kanban",
  setup () {
    const msg = ref('hi')
    onMounted(() => {
      setTimeout(() => {
        msg.value = 'hello'
      }, 2000)
    })
    return () => <div className="zeng">{msg.value}</div>
  }
})
</script>
<style scoped>
.zeng {
  background: red;
}
</style>
